Preheating water with exhaust fed coil

N

NJWashingGuy

New member
I saw a design on a new landa where they ran the exhaust into a box which contained a coil which allowed preheating of the water. With winter coming, I was thinking about trying to adapt this to save on diesel costs. Anyone have any suggestions or parts that could be used to do something like this. I am thinking of this for fleetwashing.

Appreciate any input.
Thanks, Mike.
 
I did look at it up close and someone took pics, but i forget who.... anyway, it was not magic, little metal box with a small coil inside to allow a little pre heat. I would guess that would make the water temp rise a little bit for free since its being heated from the exhaust of the engine running the powerwasher. I thought that it was a good idea and engineering feature. No moving components, made of steel...not much to break.
Anyone else ?? Opinions?
 
Mike are you trying to prevent temp loss or just trying to raise it before the pump?Carpet cleaning machines have been doing this a while.I have added a bit of race car technology to my burner it may help you with the temp drop.If that is what you want.Its basically a alarm that is tied into the themostate.Its digital so you can see the temp rise and fall.You set it alarm hi and alarm low it keeps the water temp with a 6-9 degree band.Its great and the higher the temp the closer the variance.It works great and you dont have to deal with those cheapo thermostates anymore.
 
That sounds interesting Hal, how much to get a hot water rig setup like that, is it a kit or stuff that is put together?

Thanks.
 
Kiloman said:
Mike are you trying to prevent temp loss or just trying to raise it before the pump?Carpet cleaning machines have been doing this a while.I have added a bit of race car technology to my burner it may help you with the temp drop.If that is what you want.Its basically a alarm that is tied into the themostate.Its digital so you can see the temp rise and fall.You set it alarm hi and alarm low it keeps the water temp with a 6-9 degree band.Its great and the higher the temp the closer the variance.It works great and you dont have to deal with those cheapo thermostates anymore.
Click to expand...

I was thinking of raising the water temp before the pump. This would in theory reduce the temp rise on the water temperature that you are aiming for so the ambient temp would allow you to either reduce diesel consumption with the burner, or allow a higher total heat from your unit. Both are positives and the technology that you are talking about is what they have been using on caret cleaningn machines for years. Where do you get the parts..... i want to give it a try?
 
I was thinking the same thing, it would help the final temperature or cut back a little bit on the amount of diesel used.

I would also like to try this out, just need some pictures and a list of parts and where to get them.

Thanks.
 
I think you could possibly get more heat off the chimney of your burner, the only thing with that is it would be kicking on and off.

How about another idea that I have thought of...

Remember those old barrel stoves in your shop? we had one that had 2 barrels on top of each other and captured more heat from the sencond barrel.

How about putting the second coil on top of the first coil and run the both the chimney and the engine exhaust thru it.

You know there is still a lot of heat coming out the chimney on a burner.
 
The problem with it before the pump is the restriction may require you to have a feeder pump to overcome the restriction issues on the pump. What you can do is divert your exhaust into the coil housing and capture that heat there. Just wrap he pipe with that insulating material so you don't burn yourself or loose excess heat off the extend run.
 
Paul Kassander said:
The problem with it before the pump is the restriction may require you to have a feeder pump to overcome the restriction issues on the pump. What you can do is divert your exhaust into the coil housing and capture that heat there. Just wrap he pipe with that insulating material so you don't burn yourself or loose excess heat off the extend run.
Click to expand...

Do you think that would create issues with soot build up in the coil housing??
 
you will see a BullDogPro system for all that very soon.. early 2013
Oct 25th is coming up quick.
First, I launch the 30" Vacuuming surface cleaner,
our "tier 4" diesel engine systems,
and a full line of multi-functional wands 'n tools.

When there's a company that has your back on equipment as well as we do..
If you think you have time to figure this kind of stuff out..
you are NOT a "contract cleaner".
I don't mean that disrespectfully,
.. I'm simply saying you need to choose your battles around the yard..
Leave the hard, technical equasions to a specialist,
and choose the fun and profitable contracts for a "Pollution Control Specialist"
..as your business card implies.
If you don't feel like a PCS.. you have the wrong set of suppliers.
 
No it will not increase the soot build up, unless your engine is producing a ton of soot. If that is the case I would get a new one or have it fixed now...or stand back and watch the fireworks.
 
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